Preheat the oven to 300°F.

Layer 2 long sheets of aluminum foil on a baking sheet, as shown in the video above.

Place the ham cut side down.

Wrap the ham by bring all 4 ends of the foil up and around the ham.

Roast for 2 hours.

Meanwhile, in a medium bowl, whisk together raspberry jelly and mustard until smooth. Reserve about 1 cup of glaze for serving.

Remove the ham from oven and carefully open the wrap. You'll get a pool of juices in the bottom. You can baste it over the ham, if desired.

Increase the oven to 375°F.

Brush on the remaining glaze all over the ham. Roast without cover for 30 minutes, basting every 10 minutes.

Serve with the reserved raspberry mustard glaze on the side.